By Christopher Hampton; directed by David Grindley; sets by Tim Shortall; costumes by Tobin Ost; lighting by Rick Fisher; sound by Gregory Clarke; dialect coach, Gillian Lane-Plescia; associate artistic director, Scott Ellis. Presented by the Roundabout Theater Company, Todd Haimes, artistic director. At the American Airlines Theater, 227 West 42nd Street, Manhattan, (212) 719-1300. Through June 28. Running time: 2 hours 10 minutes.